Each question on the study questionnaire will be read to the inmate volunteer and the Research Associate will record the answer. A retrospective comparative study will then be employed utilizing the inmate's initial dental intake exam (routinely administered by the Federal Bureau of Prisons' dental department). The dental chart will be abstracted for dental caries. The pattern of surface-specific dental caries (DFS index) will be described and analyzed. The focus will be on the levels of untreated and treated disease diagnosed in a 4-zone partition of the oral dentition, representing a modification of the zones identified in the Grainger's caries severity index scoring system as this partition allows focus on decay patterns of anterior tooth surfaces. The multivariate summary of disease levels within each zone will be derived and statistically compared across the three study groups using Hotelling's t2-test (the multivariate extension of the Student-t test). The results of the study will be used to do a preliminary assessment between methamphetamine drug abuse and oral health and determine whether a prospective clinical study is warranted.